fieldguide - Staff Software Engineer, App Platform

• 10+ years of experience in software engineering, with significant time spent building product-facing platforms or foundational application services • Strong product instincts and a track record of shipping platform capabilities that unlocked meaningful customer outcomes • Deep experience designing APIs, services, and shared systems that other engineers build on top of • Strong fluency with modern cloud platforms (AWS preferred), Kubernetes, and distributed systems • Track record of operating as a technical leader across multiple teams without owning them directly • Excellent judgment on what to build into the platform, what to leave to product teams, and what to buy • Strong software engineering fundamentals and the ability to contribute to and review complex codebases • Excellent written and verbal communication, with the ability to drive alignment across engineering, product, and design • High agency and a bias toward owning problems end-to-end • Experience building platforms that power AI-native products, including agent frameworks, model orchestration, or LLM-powered application surfaces • Experience designing platforms that support both multi-tenant SaaS and single-tenant enterprise deployments • Experience as a founding or early platform engineer at a vertical SaaS or enterprise AI company